86574 Federal Register / Vol. 88, No. 239 / Thursday, December 14, 2023 / Rules and Regulations 

in an affected airplane and the discovery that 

a quality escape condition could exist on 

other airplanes. The FAA is issuing this AD 

to address a missing retaining ring in a 

control column mount. A missing retaining 

ring in a control column mount, if not 

addressed, could lead to a major failure in 

the aileron quadrant assembly and result in 

loss of pitch and roll control during flight 

with consequent loss of control of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Before further flight after the effective date 

of this AD, do all applicable actions 

identified as ‘‘RC’’ (required for compliance) 

in, and in accordance with Part III. of the 

Instructions in Piper Service Bulletin No. 

1409A, dated November 21, 2023 (Piper SB 

1409A). 

(h) Special Flight Permit 

For airplanes with greater than 25 flight 

hours time since new, a one-time flight is 

allowed to reach the nearest facility that is 

capable of doing the inspection and repair 

described in Part III. of the Instructions in 

Piper SB 1409A, provided the flight is with 

minimum required crew and after 

verification of the integrity of the left and 

right control columns (the control columns 

do not feel or visually appear to be loose, do 

not have a substantial increase in control 

force requirements, or do not have a 

reduction in control authority). 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, East Certification Branch, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. In accordance with 

14 CFR 39.19, send your request to your 

principal inspector or local Flight Standards 

District Office, as appropriate. If sending 

information directly to the manager of the 

East Certification Branch, send it to the 

attention of the person identified in 

paragraph (j) of this AD and email to: 9-ASOATLACO-ADs@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local Flight Standards District Office/ 

certificate holding district office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by the Piper 

Organization Designation Authorization 

(ODA) that has been authorized by the 

Manager, East Certification Branch to make 

those findings. To be approved, the repair 

method, modification deviation, or alteration 

deviation must meet the certification basis of 

the airplane, and the approval must 

specifically refer to this AD. 

(4) Except as required by paragraph (g) of 

this AD: For service information that 

contains steps that are labeled as Required 

for Compliance (RC), the following 

provisions apply. 

(i) The steps labeled as RC, including 

substeps under an RC step and any figures 

identified in an RC step, must be done to 

comply with the AD. An AMOC is required 

for any deviations to RC steps, including 

substeps and identified figures. 

(ii) The steps not labeled as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC, provided the RC steps, 

including substeps and identified figures, can 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(j) Additional Information 

For more information about this AD, 

contact Tuan Tran, Aviation Safety Engineer, 

FAA, 1701 Columbia Avenue, College Park, 

GA 30337; phone: (404) 474–5522; email: 9- 

ASO-ATLACO-ADs@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Piper Service Bulletin No. 1409A, dated 

November 21, 2023. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Piper Aircraft, Inc., 2926 

Piper Drive, Vero Beach, FL 32960; phone: 

(772) 291–2141; website: www.piper.com. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, MO 64106. For information on 

the availability of this material at the FAA, 

call (817) 222–5110. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations or email fr.inspection@nara.gov. 

Issued on December 8, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–27494 Filed 12–11–23; 4:15 pm] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1639; Project 

Identifier MCAI–2023–00109–T; Amendment 

39–22604; AD 2023–23–02] 

RIN 2120–AA64 

Airworthiness Directives; MHI RJ 

Aviation ULC (Type Certificate 

Previously Held by Bombardier, Inc.) 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all MHI 

RJ Aviation ULC Model CL–600–2B19 

(Regional Jet Series 100 & 440), CL–600– 

2C10 (Regional Jet Series 700, 701 & 

702), CL–600–2C11 (Regional Jet Series 

550), CL–600–2D15 (Regional Jet Series 

705), CL–600–2D24 (Regional Jet Series 

900), and CL–600–2E25 (Regional Jet 

Series 1000) airplanes. This AD was 

prompted by reports of power control 

unit (PCU) rod end fractures due to 

pitting corrosion, and a determination 

that new or more restrictive 

airworthiness limitations are necessary. 

This AD requires, for certain airplanes, 

revising the existing maintenance or 

inspection program, as applicable, to 

incorporate new or more restrictive 

airworthiness limitations. This AD also 

requires accomplishing certain aircraft 

maintenance manual (AMM) tasks and 

corrective actions following short-term 

or long-term storage. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective January 18, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of January 18, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1639; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

Material Incorporated by Reference: 


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Federal Register / Vol. 88, No. 239 / Thursday, December 14, 2023 / Rules and Regulations 86575 

• For service information identified 

in this final rule, contact MHI RJ 

Aviation Group, Customer Response 

Center, 3655 Ave. des GrandesTourelles, Suite 110, Boisbriand, 

Que ́bec J7H 0E2 Canada; North America 

toll-free telephone 833–990–7272 or 

direct-dial telephone 450–990–7272; fax 

514–855–8501; email thd.crj@

mhirj.com; website mhirj.com. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, 

call 206–231–3195. It is also available at 

regulations.gov under Docket No. FAA– 

2023–1639. 

FOR FURTHER INFORMATION CONTACT: 

Gabriel Kim, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all MHI RJ Aviation ULC Model 

CL–600–2B19 (Regional Jet Series 100 & 

440), CL–600–2C10 (Regional Jet Series 

700, 701 & 702), CL–600–2C11 (Regional 

Jet Series 550), CL–600–2D15 (Regional 

Jet Series 705), CL–600–2D24 (Regional 

Jet Series 900), and CL–600–2E25 

(Regional Jet Series 1000) airplanes. The 

NPRM published in the Federal 

Register on July 28, 2023 (88 FR 48767). 

The NPRM was prompted by AD CF– 

2023–03, dated January 20, 2023, issued 

by Transport Canada, which is the 

aviation authority for Canada (referred 

to after this as the MCAI). The MCAI 

states that in-service reports of PCU rod 

end fractures due to pitting corrosion 

led to the issuance of Transport Canada 

AD CF–2018–29, dated November 2, 

2018 (which corresponds to FAA AD 

2019–19–08, Amendment 39–19744 (84 

FR 60902, November 12, 2019) (AD 

2019–19–08). AD 2019–19–08 requires 

detailed inspections of the elevator PCU 

rod ends and applicable corrective 

actions, and prohibits using certain 

aircraft maintenance manual tasks. 

Pitting corrosion can cause the PCU end 

rod spherical bearing to seize, 

potentially inducing a bending moment 

on the PCU output rod. The bending 

moment will eventually fracture the rod 

end. This condition, if not corrected, 

could lead to a disconnect between the 

PCU and the elevator or rudder control 

surface, resulting in potential loss of the 

control surface function or inadequate 

flutter suppression. Since Transport 

Canada AD CF–2018–29 was issued, 

MHI RJ conducted further safety 

analyses and determined that new or 

more restrictive airworthiness 

limitations are necessary for the 

operational check of each individual 

rudder PCU and elevator PCU. 

Additionally, Transport Canada 

determined that certain return-to-service 

AMM tasks are needed following shortterm or long-term airplane storage. 

In the NPRM, the FAA proposed to 

require, for certain airplanes, revising 

the existing maintenance or inspection 

program, as applicable, to incorporate 

new or more restrictive airworthiness 

limitations. The NPRM also proposed to 

require accomplishing certain aircraft 

maintenance manual (AMM) tasks and 

corrective actions following short-term 

or long-term storage. The FAA is issuing 

this AD to address fractured PCU rod 

ends. This condition, if not addressed, 

could lead to a disconnect between the 

PCU and the elevator or rudder control 

surface, resulting in potential loss of the 

control surface function or inadequate 

flutter suppression. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1639. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received a comment from 

Air Line Pilots Association, 

International, who supported the NPRM 

without change. 

The FAA received additional 

comments from two commenters, 

including Air Wisconsin Airlines and 

MHI RJ Aviation ULC. The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Request To Match MCAI Language 

Air Wisconsin Airlines requested that 

the phrase ‘‘or later revisions of these 

tasks,’’ as found in the Canadian AD, be 

added to any AMM revisions in the 

NPRM. Air Wisconsin stated that this 

phrase could help avoid the need for an 

AMOC at every AMM revision. 

The FAA does not agree to the 

requested change. Specifying in an AD 

the use of ‘‘later revisions’’ of required 

service information, which do not exist 

at the time a final rule is published, 

violates the policies of the Office of the 

Federal Register (OFR) for material that 

is incorporated by reference. This AD 

has not been changed regarding this 

request. 

Request To Correct Error in Required 

Actions 

MHI RJ requested that the reference to 

MRM TR ALI–0759 be deleted from 

paragraph (i)(1) of the proposed AD, 

‘‘Required Actions for Model CL–600– 

2E25 Airplanes,’’ because that TR is not 

applicable to those airplanes. The 

commenter noted that this would agree 

with the MCAI. 

The FAA agrees to the requested 

change. The reference to TR ALI–0759 

has been deleted from paragraph (i)(1) of 

this AD. 

Conclusion 

This product has been approved by 

the aviation authority of another 

country and is approved for operation in 

the United States. Pursuant to the FAA’s 

bilateral agreement with this State of 

Design Authority, it has notified the 

FAA of the unsafe condition described 

in the MCAI referenced above. The FAA 

reviewed the relevant data, considered 

the comments received, and determined 

that air safety requires adopting this AD 

as proposed. Accordingly, the FAA is 

issuing this AD to address the unsafe 

condition on this product. Except for 

minor editorial changes, and any other 

changes described previously, this AD is 

adopted as proposed in the NPRM. 

None of the changes will increase the 

economic burden on any operator. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed MHI RJ Temporary 

Revisions ALI–0757 and ALI–0759, both 

dated September 24, 2021. This service 

information specifies new or more 

restrictive airworthiness limitations for 

the elevator and rudder PCUs. 

The FAA also reviewed the following 

service information. This service 

information specifies, among other 

tasks, operational tests of the rudder 

control and elevator control systems, 

and detailed inspections of the rudder 

PCU rod end spherical ball and elevator 

PCU rod end spherical ball, and 

corrective actions. Corrective actions 

include making sure that the applicable 

parts are moving or rotating correctly. 

These documents are distinct since they 

apply to different airplane models in 

different configurations. 

• Task 27–21–00–710–805, 

Operational Test of the Rudder Control 

System, Subject 27–21–00, Rudder 

Control System, Chapter 27, Flight 

Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

• Task 27–23–01–220–801, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 


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86576 Federal Register / Vol. 88, No. 239 / Thursday, December 14, 2023 / Rules and Regulations 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A– 

001, Revision 66, dated October 10, 

2022. 

• Task 27–31–00–710–803, 

Operational Test of the Elevator Control 

System, Subject 27–31–00, Elevator 

Control System, Chapter 27, Flight 

Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

• Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 

27, Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A– 

001, Revision 66, dated October 10, 

2022. 

• Task 27–23–01–220–802, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/ 

1000 Aircraft Maintenance Manual, Part 

2, CSP B–001, Revision 71, dated 

December 16, 2022. 

• Task 27–23–01–710–801, 

Operational Test of the Rudder PCU, 

Subject 27–23–01, Power Control Unit 

(PCU), Rudder, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, 

CSP B–001, Revision 71, dated 

December 16, 2022. 

• Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 

27, Flight Controls, of MHI RJ CRJ700/ 

900/1000 Aircraft Maintenance Manual, 

Part 2, CSP B–001, Revision 71, dated 

December 16, 2022. 

• Task 27–33–01–710–802, 

Operational Test of the Elevator PowerControl Units (PCUs), Subject 27–33–01, 

Power Control Unit (PCU), Elevator, 

Chapter 27, Flight Controls, of MHI RJ 

CRJ700/900/1000 Aircraft Maintenance 

Manual, Part 2, CSP B–001, Revision 71, 

dated December 16, 2022. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in the ADDRESSES section. 

Costs of Compliance 

The FAA estimates that this AD 

affects 1,125 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per product Cost on U.S. operators 

Up to 8 work-hours × $85 per hour = $680 ............................. $0 Up to $680 .............................. Up to $765,000. 

The FAA has determined that revising 

the maintenance or inspection program 

takes an average of 90 work-hours per 

operator, although the agency 

recognizes that this number may vary 

from operator to operator. Since 

operators incorporate maintenance or 

inspection program changes for their 

affected fleet(s), the FAA has 

determined that a per-operator estimate 

is more accurate than a per-airplane 

estimate. Therefore, the agency 

estimates the average total cost per 

operator to be $7,650 (90 work-hours × 

$85 per work-hour). 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2023–23–02 MHI RJ Aviation ULC (Type 

Certificate Previously Held by 

Bombardier, Inc.): Amendment 39– 

22604; Docket No. FAA–2023–1639; 

Project Identifier MCAI–2023–00109–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective January 18, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all MHI RJ Aviation 

ULC (Type Certificate previously held by 

Bombardier, Inc.) airplanes identified in 

paragraphs (c)(1) through (6) of this AD, 

certificated in any category. 

(1) Model CL–600–2B19 (Regional Jet 

Series 100 & 440) airplanes. 

(2) Model CL–600–2C10 (Regional Jet 

Series 700, 701, & 702) airplanes. 

(3) Model CL–600–2C11 (Regional Jet 

Series 550) airplanes. 

(4) Model CL–600–2D15 (Regional Jet 

Series 705) airplanes. 

(5) Model CL–600–2D24 (Regional Jet 

Series 900) airplanes. 

(6) Model CL–600–2E25 (Regional Jet 

Series 1000) airplanes. 


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Federal Register / Vol. 88, No. 239 / Thursday, December 14, 2023 / Rules and Regulations 86577 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight controls. 

(e) Reason 

This AD was prompted by reports of power 

control unit (PCU) rod end fractures due to 

pitting corrosion and a determination that 

new or more restrictive airworthiness 

limitations are necessary. The FAA is issuing 

this AD to address fractured PCU rod ends. 

This condition, if not addressed, could lead 

to a disconnect between the PCU and the 

elevator or rudder control surface, resulting 

in potential loss of the control surface 

function or inadequate flutter suppression. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions for Model CL–600–2B19 

Airplanes 

For Model CL–600–2B19 (Regional Jet 

Series 100 & 440) airplanes: Within 60 days 

after the effective date of this AD, when 

returning an airplane from long-term storage 

(storage lasting more than 28 days), do the 

actions specified in paragraphs (g)(1) through 

(4) of this AD. Do all applicable corrective 

actions before further flight. 

(1) Accomplish an operational test and 

applicable corrective actions, in accordance 

with Task 27–21–00–710–805, Operational 

Test of the Rudder Control System, Subject 

27–21–00, Rudder Control System, Chapter 

27, Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

(2) Accomplish an operational test and 

applicable corrective actions, in accordance 

with Task 27–31–00–710–803, Operational 

Test of the Elevator Control System, Subject 

27–31–00, Elevator Control System, Chapter 

27, Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

(3) Accomplish a detailed inspection and 

applicable corrective actions, in accordance 

with Task 27–23–01–220–801, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, Revision 

66, dated October 10, 2022. 

(4) Accomplish a detailed inspection and 

applicable corrective actions in accordance 

with Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 27, 

Flight Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, Revision 

66, dated October 10, 2022. 

(h) Required Actions for Model CL–600– 

2C10, CL–600–2C11, CL–600–2D15 and CL– 

600–2D24 Airplanes 

For Model CL–600–2C10 (Regional Jet 

Series 700, 701, & 702); CL–600–2C11 

(Regional Jet Series 550); CL–600–2D15 

(Regional Jet Series 705); and CL–600–2D24 

(Regional Jet Series 900) airplanes: 

Accomplish the actions required by 

paragraphs (h)(1) through (3) of this AD, as 

applicable. 

(1) Within 60 days after the effective date 

of this AD, revise the existing maintenance 

or inspection program, as applicable, to 

incorporate the information specified in MHI 

RJ Temporary Revisions ALI–0757 and ALI– 

0759, both dated September 24, 2021. The 

initial compliance time for doing the tasks is 

within 400 flight hours or 6 months, 

whichever occurs first after the effective date 

of this AD; or within 60 days after the 

effective date of this AD; whichever occurs 

latest. 

(2) Within 60 days after the effective date 

of this AD, when returning an airplane from 

short-term storage (storage lasting 28 days or 

less), do the actions specified in paragraphs 

(h)(2)(i) and (ii) of this AD. Do all applicable 

corrective actions before further flight. 

(i) Accomplish an operational test and 

applicable corrective actions, in accordance 

with Task 27–23–01–710–801, Operational 

Test of the Rudder PCU, Subject 27–23–01, 

Power Control Unit (PCU), Rudder, Chapter 

27, Flight Controls, of MHI RJ CRJ700/900/ 

1000 Aircraft Maintenance Manual, Part 2, 

CSP B–001, Revision 71, dated December 16, 

2022. 

(ii) Accomplish an operational test and 

applicable corrective actions in accordance 

with Task 27–33–01–710–802, Operational 

Test of the Elevator Power-Control Units 

(PCUs), Subject 27–33–01, Power Control 

Unit (PCU), Elevator, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(3) Within 60 days after the effective date 

of this AD, when returning an airplane from 

long-term storage (storage lasting more than 

28 days), do the actions specified in 

paragraphs (h)(3)(i) through (iv) of this AD. 

Do all applicable corrective actions before 

further flight. 

(i) Accomplish an operational test and 

applicable corrective actions, in accordance 

with Task 27–23–01–710–801, Operational 

Test of the Rudder PCU, Subject 27–23–01, 

Power Control Unit (PCU), Rudder, Chapter 

27, Flight Controls, of MHI RJ CRJ700/900/ 

1000 Aircraft Maintenance Manual, Part 2, 

CSP B–001, Revision 71, dated December 16, 

2022. 

(ii) Accomplish an operational test and 

applicable corrective actions in accordance 

with Task 27–33–01–710–802, Operational 

Test of the Elevator Power-Control Units 

(PCUs), Subject 27–33–01, Power Control 

Unit (PCU), Elevator, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(iii) Accomplish a detailed inspection and 

applicable corrective actions in accordance 

with Task 27–23–01–220–802, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(iv) Accomplish a detailed inspection and 

applicable corrective actions, in accordance 

with Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(i) Required Actions for Model CL–600–2E25 

Airplanes 

For Model CL–600–2E25 (Regional Jet 

Series 1000) airplanes: Accomplish the 

actions specified in paragraphs (i)(1) through 

(3) of this AD, as applicable. 

(1) Within 60 days after the effective date 

of this AD, revise the existing maintenance 

or inspection program, as applicable, to 

incorporate the information specified in MHI 

RJ Temporary Revision ALI–0757, dated 

September 24, 2021. The initial compliance 

time for doing the tasks is within 400 flight 

hours or 6 months, whichever occurs first 

after the effective date of this AD; or within 

60 days after the effective date of this AD; 

whichever occurs latest. 

(2) Within 60 days after the effective date 

of this AD, when returning an airplane from 

short-term storage (storage lasting 28 days or 

less): Accomplish an operational test and 

applicable corrective actions in accordance 

with Task 27–33–01–710–802, Operational 

Test of the Elevator Power-Control Units 

(PCUs), Subject 27–33–01, Power Control 

Unit (PCU), Elevator, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

Do all applicable corrective actions before 

further flight. 

(3) Within 60 days after the effective date 

of this AD, when returning an airplane from 

long-term storage (storage lasting more than 

28 days), do the actions specified in 

paragraphs (i)(3)(i) and (ii) of this AD. Do all 

applicable corrective actions before further 

flight. 

(i) Accomplish an operational test and 

applicable corrective actions, in accordance 

with Task 27–33–01–710–802, Operational 

Test of the Elevator Power¥Control Units 

(PCUs), Subject 27–33–01, Power Control 

Unit (PCU), Elevator, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(ii) Accomplish a detailed inspection and 

applicable corrective actions, in accordance 

with Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(j) No Alternative Actions or Intervals 

After the existing maintenance or 

inspection program has been revised as 

required by paragraphs (h)(1) and (i)(1) of 

this AD, no alternative actions (e.g., 

inspections), or intervals may be used unless 

the actions, and intervals are approved as an 

alternative method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (k)(1) of this AD. 

(k) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 


lotter on DSK11XQN23PROD with RULES1
86578 Federal Register / Vol. 88, No. 239 / Thursday, December 14, 2023 / Rules and Regulations 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Validation Branch, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager, International Validation 

Branch, mail it to the address identified in 

paragraph (k)(2) of this AD or email to: 9- 

AVS-AIR-730-AMOC@faa.gov. If mailing 

information, also submit information by 

email. Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, International Validation 

Branch, FAA; or Transport Canada; or MHI 

RJ Aviation ULC’s Transport Canada Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(l) Additional Information 

(1) Refer to Transport Canada AD CF– 

2023–03, dated January 20, 2023, for related 

information. This Transport Canada AD may 

be found in the AD docket at regulations.gov 

under Docket No. FAA–2023–1639. 

(2) For more information about this AD, 

contact Gabriel Kim, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@faa.gov. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) MHI RJ Temporary Revision ALI–0757, 

dated September 24, 2021. 

(ii) MHI RJ Temporary Revision ALI–0759, 

dated September 24, 2021. 

(iii) Task 27–21–00–710–805, Operational 

Test of the Rudder Control System, Subject 

27–21–00, Rudder Control System, Chapter 

27, Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

(iv) Task 27–23–01–220–801, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, Revision 

66, dated October 10, 2022. 

(v) Task 27–31–00–710–803, Operational 

Test of the Elevator Control System, Subject 

27–31–00, Elevator Control System, Chapter 

27, Flight Controls, of MHI RJ CRJ200 

Aircraft Maintenance Manual, CSP A–001, 

Revision 66, dated October 10, 2022. 

(vi) Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 27, 

Flight Controls, of MHI RJ CRJ200 Aircraft 

Maintenance Manual, CSP A–001, Revision 

66, dated October 10, 2022. 

(vii) Task 27–23–01–220–802, Detailed 

Inspection of the Rudder PCU Rod End 

Spherical Ball, Subject 27–23–01, Power 

Control Unit (PCU), Rudder, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(viii) Task 27–23–01–710–801, Operational 

Test of the Rudder PCU, Subject 27–23–01, 

Power Control Unit (PCU), Rudder, Chapter 

27, Flight Controls, of MHI RJ CRJ700/900/ 

1000 Aircraft Maintenance Manual, Part 2, 

CSP B–001, Revision 71, dated December 16, 

2022. 

(ix) Task 27–33–01–220–801, Detailed 

Inspection of the Elevator PCU Rod End 

Spherical Ball, Subject 27–33–01, Power 

Control Unit (PCU), Elevator, Chapter 27, 

Flight Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(x) Task 27–33–01–710–802, Operational 

Test of the Elevator Power-Control Units 

(PCUs), Subject 27–33–01, Power Control 

Unit (PCU), Elevator, Chapter 27, Flight 

Controls, of MHI RJ CRJ700/900/1000 

Aircraft Maintenance Manual, Part 2, CSP B– 

001, Revision 71, dated December 16, 2022. 

(3) For service information identified in 

this AD, contact MHI RJ Aviation Group, 

Customer Response Center, 3655 Ave. des 

Grandes-Tourelles, Suite 110, Boisbriand, 

Que ́bec J7H 0E2 Canada; North America tollfree telephone 833–990–7272 or direct-dial 

telephone 450–990–7272; fax 514–855–8501; 

email thd.crj@mhirj.com; website mhirj.com. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations, or email fr.inspection@

nara.gov. 

Issued on December 5, 2023. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2023–27427 Filed 12–13–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2023–2256; Airspace 

Docket No. 23–AEA–21] 

RIN 2120–AA66 

Amendment of Class D and Class E 

Airspace; Latrobe, PA 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action amends Class D 

airspace, Class E airspace designated as 

an extension to a Class D surface area, 

and Class E airspace extending upward 

from 700 feet above the surface for 

Arnold Palmer Regional Airport, 

Latrobe, Pennsylvania, by making 

editorial changes to the airspace legal 

descriptions. This action does not 

change the airspace boundaries or 

operating requirements. 

DATES: Effective 0901 UTC, March 21, 

2024. The Director of the Federal 

Register approves this incorporation by 

reference action under 1 CFR part 51, 

subject to the annual revision of FAA 

Order JO 7400.11 and publication of 

conforming amendments. 

ADDRESSES: FAA Order JO 7400.11H, 

Airspace Designations, Reporting 

Points, and subsequent amendments 

online at www.faa.gov/air_traffic/ 

publications/. For further information, 

contact the Airspace Policy Group, 

Federal Aviation Administration, 800 

Independence Avenue SW, Washington, 

DC 20591; telephone: (202) 267–8783. 

FOR FURTHER INFORMATION CONTACT: John 

Fornito, Operations Support Group, 

Eastern Service Center, Federal Aviation 

Administration, 1701 Columbia Avenue, 

College Park, GA 30337; telephone: 

(404) 305–5966. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

Subtitle I, Section 106 describes the 

authority of the FAA Administrator. 

Subtitle VII, Aviation Programs, 

describes in more detail the scope of the 

agency’s authority. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 


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